How to create API using Fiber in Golang

Golang is a programming language developed by Google. It can used to create cloud services, web , CLI tools etc. The first step to use Go is download and install the SDK.

Basic setup

To build basic API in Golang we need following packages

• Fiber
• log
• fmt

go get -u github.com/gofiber/fiber/v2

Fiber is express inspired library, if you were familiar with Nodejs express package, no worries . In the main.go file add the following

package main

import  
("github.com/gofiber/fiber/v2"
"fmt"
"log"
)
 
func api(c *fiber.Ctx) error {
    msg := fmt.Sprintf("✋ %s", c.Params("*"))
    return c.SendString(msg) // => ✋ register
}


func index(c *fiber.Ctx) error {
    return c.SendString("I am Fiber") // => ✋ register
}


func main(){
	app:= fiber.New()
    app.Get("/",index )
    app.Get("/api/*",api )
    log.Fatal(app.Listen(":3000"))
}

Here we create a Fiber router instance which can be used to create API route. We also define handler function for the API too.

:= is the short hand in Golang for creating variables

Run the project

By using go run . or go run main.go can execute the program.

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